Folding knife



(No Model.)

FQ C. MELCHIOR.

FOLDING KNIFE Patente i NQl 535,

TTORNEY.

limitan rares .WENT

FFlCE.

FOLDINGKNIFE.

SPCIFICATION forming part of Letters `Patent No. 535,845, dated March19, 1895. Application led April l2, 1894. Serial No. 507,208.V (Nomodel.) I

To all whom t may concern.:

Be it known that I, FREDRnoK C. MnLcHion, a citizen of the UnitedStates, residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Improvement in FoldingKnives, which improvement is fully set forth in the followingspecification and accompanyingdrawings.

`My invention consists of a folding knife formed of a case, a frameadapted to slide therein, a fastening for said frame, and a.

blade connected with said frame, the operation and construction beinghereinafter set forth.

" It also consists in having the blade so connected with the frame thatit is self-opening thereon, as hereinafter described.

Figures l and 2 represent perspective views of a knife embodying myinvention, the same being respectively in folded and unfolded condition.Fig. 3 represents a perspective View of the casingin longitudinalsection, and the parts within the casing. Fig. 4 represents an enlargedview of a portion of Fig. 3. Fig. 5 represents a perspective viewshowing the blade, and the frame to which it is pivoted, the formerbeing partly open. Fig. 6 represents a perspective View partly sectionalof a blade and frame, the former being pivoted to the latter at a rightangle to that shown in Fig. 5.

Similar letters of reference indicate corresponding parts in the severalfigures.

Referring to the drawings: A designates a case Within which is thesliding frame B, the latter consisting of the side pieces B', and endplate B2, connecting the same.

C designates a blade which is pivoted to said frame B, and has thespring D connected therewith, and with the axis thereof, whereby saidblade opens out or unfolds, as shown in Fig. 5. Pivoted to the plate B2,which is within the case, at the end opposite to the blade, is the leverE, to which is connected the dog F, which latter is fitted to one of theside pieces of the frame B as at G, and has its nose adapted to engagewith the shoulder H on the interior of the case, said leverhaving aring, knob or handle J, on the outer end thereof, it being noticed thatthe heel-end of the case has an opening K therein, so that said handlemay enter the case when the knife is to be unfolded. Connected with theframeisa spring L, which bears against the dog F, so as to force thelatter into engagement with the shoulder H.

Within the case, near the front end thereof, is a shoulder M, which isadapted to be engaged by the dog F, when the blade is withdrawn from thecase to full extent, thus limiting the withdrawing motion of said blade.

In Fig. 6, the blade has its pivot at a right angle to that shown inFig. 5, without however producing different results from that shown insaid Fig. 5.

The operation is as follows: When the knife is to be unfolded, the leveris moved so as to withdraw the dog from the shoulder H, and the frame Bis then pushed partly through the case by pressure on the handle J. Theframe is then grasped at the front end of the case, and pulled entirelythrough the latter until the point of the blade is uncovered, when thespring D becomes operative so that the blade flies out to the operativeposition shown in dotted lines Fig. 3. The frame may be grasped as ahandle and the blade may be used, or the frame is again returned intothe case as in Fig. 2, which is more desirable as the heel of the bladeis Within said case, thus preventing the blade from turning while thecase forms the handle, the advantage of which is evident. When the knifeisto beclosed or folded, the frame is drawn out by the blade, and thelatter is then folded into the frame, after which the frame andblade-are pushed into the case to full extent, when the handle Jprotrudes through the case, and the dog F interlocks with the shoulder Hthereof, thus retaining the blade Within the case. The in- Ward motionof the frame is limited by shoulders or stops N, on the forward end'ofthe same, said stops abutting against the case, as shown in Fig. 3. Onthe inner sides of the frame, near the pivot of the blade, are shouldersP which are adapted to be engaged by the shoulders Q on the blade, thuslimiting the opening orunfolding motion of the blade. On the rear end ofthe plate B2 are lugs R, between which the lever E has its play, andwhich limit the opposite motions of said lever.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

IOO

l. A folding knife having a case, a sliding frame in said case, a bladepivoted to one end of said frame, and means connected with the other endof the frame for locking said frame within the case, said means having aprojecting portion Without the case for unlocking theframe, said partslbeing combined substan` y tially as described.

' with said lever and adapted to engage in recesses in said case, saidparts being combined substantially as described.

4. A sliding frame, a self-opening blade connected with said frame, acase containing said frame and blade, and means connected with the innerend of the case for locking said blade with said case, the parts beingcombined substantially as described.

5. In a folding knife, a casecontaining a pivotal blade, a framecarrying said blade, and a spring-pressed dog connected with said frame,a lever mounted on the frame carrying said dog, and a shoulder on thecasing adapted to be engaged by said dog for locking the blade Withinthe case, the parts being combined substantially as described.

6. A folding knife having acase, a sliding frame with a pivoted blade atone end, alever pivoted to the other end, of the frame, a dog connectedwith the lever and engaging shoulders on the case, near its rear andfront ends and a spring,r connected with the frame and bea'ring againstthe dog, said parts being combined substantially as described.

'FREDRECK C. MELCHIOR.

Witnesses:

JOHN A. WIEDERSHEIM, A. P. JENNINGS.

